Question

如何获取连接到服务器的客户端数量？如果说我已经打开4个终端并在localhost上运行client.pl 4次以进行测试，如何在服务器脚本中获取客户端ID和客户端计数？我在VirtualBox上使用Ubuntu。我在多线程环境中。

'''

#!/usr/bin/perl
#server
use warnings;
use strict;
use IO::Socket;
use threads;
use threads::shared;
$|++;
print "$$ Server started\n";;  # do a "top -p -H $$" to monitor server threads

our @clients : shared;
@clients = ();

my $server = new IO::Socket::INET(
    Timeout   => 7200,
    Proto     => "tcp",
    LocalPort => 9000,
    Reuse     => 1,
    Listen    => 3
);
my $num_of_client = -1;

while (1) {
    my $client;

    do {
        $client = $server->accept;
    } until ( defined($client) );

    my $peerhost = $client->peerhost();
    print "accepted a client $client, $peerhost, id = ", ++$num_of_client, "\n";
    my $fileno = fileno $client;
    push (@clients, $fileno);
    #spawn a thread here for each client
    my $thr = threads->new( \&processit, $client, $fileno, $peerhost )->detach(); 
}
# end of main thread

sub processit {
     my ($lclient,$lfileno,$lpeer) = @_; #local client

     if($lclient->connected){
          # Here you can do your stuff
          # I use have the server talk to the client
          # via print $client and while(<$lclient>)
          print $lclient "$lpeer->Welcome to server\n";  

          while(<$lclient>){
             # print $lclient "$lpeer->$_\n";
              print "clients-> @clients\n";           

              foreach my $fn (@clients) { 
                  open my $fh, ">&=$fn" or warn $! and die;
                  print $fh  "$_"  
                  }

           }

    }

  #close filehandle before detached thread dies out
  close( $lclient);
  #remove multi-echo-clients from echo list
  @clients = grep {$_ !~ $lfileno} @clients;

}
__END__

'''

Answer 1

将其与其余参数一起传递给processit（）。

在Perl套接字编程中，如何从客户端发送数据并从服务器接收数据，以及如何获取客户端进程数和客户端ID？

1 个答案: